为什么python不能使用zip方法解压缩由winrar创建的受密码保护的zip文件？
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why can't python unzip a password protected zip file created by winrar using the zip method?
提问by wookie
I have searched the web high and low but still couldn't find a solution for the above problem. Does anyone out there know why and if so how it can be done?
我在网上搜索了高低，但仍然找不到上述问题的解决方案。有没有人知道为什么，如果知道，怎么做？
psw="dg"
ZipFile.extractall("data.zip", None, psw)
The error that I've got:
我得到的错误：
TypeError: unbound method extractall() must be called
with ZipFile instance as first argument (got str instance instead)
采纳答案by Bruno Gelb
Because you are using it wrong. :) From docs:
因为你用错了。:) 来自文档：
ZipFile.extractall([path[, members[, pwd]]])
Extract all members from the archive to the current working directory. path specifies a different directory to extract to. members is optional and must be a subset of the list returned by namelist(). pwd is the password used for encrypted files.
压缩文件。extractall([path[, members[, pwd]]])
将存档中的所有成员提取到当前工作目录。 path 指定要提取到的不同目录。members 是可选的，并且必须是 namelist() 返回的列表的子集。pwd 是用于加密文件的密码。
So you should call that this function for ZipFile object, not as static method. And you should not pass name of archive as a first argument. :)
所以你应该为 ZipFile 对象调用这个函数，而不是作为静态方法。并且您不应将存档名称作为第一个参数传递。:)
this way it'll work:
这样它就会起作用：
from zipfile import ZipFile
with ZipFile('data.zip') as zf:
zf.extractall(pwd='dg'
EDIT, in newer versions use:
编辑，在较新的版本中使用：
zf.extractall(pwd=b'dg')
